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Nokia Lumia 820 vs Xiaomi Redmi A7 Pro

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)  
Available Available 2013
Dimensions 171.6 x 79.5 x 8.2 mm  
Sim Type Micro-SIM Nano-SIM + Nano-SIM  
Weight 160 g (5.64 oz) 208 g  
Display Type AMOLED capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen   120Hz, 800 nits (HBM)  
Display Size 6.9 Inches   720 x 1600 Pixels (~254 PPI)  
Memory 8 GB storage, 1 GB RAM 64GB Built-in, 4GB RAM, UFS 2.2  
Card slot microSDXC (dedicated slot)  
RAM 1 GB
GPRS Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps
EDGE Class 12
3G Yes
WLAN Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band  
Infrared No
BlueTooth Yes, v3.1 with A2DP, EDR v5.2 with A2DP, LE  
USB Yes, microUSB v2.0 USB Type-C 2.0  
NFC No  
GPS Yes, with A-GPS support and GLONASS Yes + GPS  
Main Camera Dual Camera: 32 MP, f/1.8, (wide) + Auxiliary lens, LED Flash   HDR, Video (1080p@30fps)  
Front Camera 8 MP  
OS Microsoft Windows Phone 8 Android 16 OS  
Chipset Unisoc T7250 (12 nm)  
Processor Qualcomm MSM8960 Snapdragon, Dual-core 1.5 GHz Krait, GPU Adreno 225 Octa-core (2 x 1.8 GHz Cortex-A75 + 6 x 1.6 GHz Cortex-A55)  
GPU Mali-G57 MP1  
Sensors Accelerometer, Compass, Fingerprint (side mounted), Virtual proximity sensing  
Browser HTML5 HTML5  
Radio No
Sound Vibration; MP3, WAV ringtones 3.5mm Audio Jack, 24-bit/192kHz audio, Speaker  Phone  
Colors Black, Gray, Red, Yellow, White, Blue, Violet Black, Mist Blue, Palm Green, Sunset Orange  
Battery 6000 mAh   - Battery charging 15W wired  
StandBy Time Standard battery, Li-Ion 1650 mAh (BP-5T)
TalkTime Up to 330 h (2G) / Up to 330 h (3G)
Misc SMS(threaded view), MMS, Email, Push Mail, IM   Dust and splash resistant, Photo/video editor, Document viewer